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  4. Which one of the following classes of animals constitutes the largest biomass on the earth?

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Q. Which one of the following classes of animals constitutes the largest biomass on the earth?

KVPYKVPY 2013

Solution:

Insects (class-Insecta or Hexapoda) are the animals constituting the largest biomass on the earth. In the world, about $900$ thousand different kinds of living insects are known. This represents approximately $80 \%$ of the world's animal species.